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ao40 sband feed struts



It must be the struts, off the front at 20-60 squint there's three struts
and three main and many other amplitude peaks.Off the side I pick up only
two spikes thus is revealed the true rotation rate. Two struts visible.
Off the back nobody's home and no struts are visible. Only pick up when
close in.
1/4/2001 3.3532 secs per rev
12/30/2000 3.355 sec per rev from a direct digital recording in each case.
So the wobble might be the different phase as the S dish is on the side far
from you then close to you.
Step phase modulation.
That thing  is like a puzzle up there to figure out.



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